5F-PVP is a new research chemical act as a psychostimulant.It is similar with α-PVP. Its purity is over 99.7%.

There is very little information regarding the pharmacology of 5F-PVP within the scientific literature. So it is available for sale as a grey area research chemical through Best-feel.com.

α-PVP may be quantified in blood, plasma or urine by liquid chromatography-mass spectrometry to confirm a diagnosis of poisoning in hospitalized patients or to provide evidence in a medicolegal death investigation. Blood or plasma α-PVP concentrations are expected to be in a range of 10–50 μg/L in persons using the drug recreationally, >100 μg/L in intoxicated patients and >300 μg/L in victims of acute overdosage.

α-Pyrrolidinopentiophenone (also known as alpha-pyrrolidinovalerophenone, α-PVP, alpha-PVP, O-2387, β-keto-prolintane, Prolintanone, or Desmethyl Pyrovalerone) is a synthetic stimulant of the cathinone class developed in the 1960s that has been sold as a designer drug.

Colloquially it is sometimes called flakka or gravel. α-PVP is chemically related to pyrovalerone and is the ketone analog of prolintane.